71403-35-5Relevant academic research and scientific papers
Structure and Non-Linear Optical properties of phosphine oxide derivatives
Lequan, Minh,Lequan, Rose Marie,Chane-Ching, Kathleen,Bassoul, Pierre,Bravic, Georges,Barrans, Yvette,Chasseau, Daniel
, p. 5 - 9 (2007/10/03)
The crystal structures of three different phosphine oxides derivatives possessing high quadratic susceptibilities, β, in solution have been investigated by X-ray diffraction. Slight modification of the transmitter chain leads to an acentric molecule; however, it is shown that these polar molecules have specific arrangements in the crystalline state, leading to a weak non-linear optical (NLO) response. The crystallographic data were entered into the MOPAC program to calculate the quadratic hyperpolarizability of each structure. The results were compared to those obtained by the use of standard internal data of the MOPAC program.
The Substituent Dependence of the Direct trans->cis Photoisomerization of Donor Substituted 4'-Diphenylphosphinyl trans-Stilbenes
Gloyna, Dieter,Wegener, Wolfgang,Alder, Lutz
, p. 487 - 492 (2007/10/02)
From the fluorescence quantum yield φf the fluorescence decay time τwf and the quantum yield φtc of the trans->cis photoisomerization results the fraction α of perpendicular singlet (perp-S1) decaying to ground state trans-stilbenes 1.The α values of the donor substituted 4'-diphenylphosphinyl-trans-stilbenes 1 in the solvents toluene and n-propanol are dependent on the donor substituent in 1 and the solvent.It is concluded for 1 that increasing polarity of the first excited singlet state (tr-S1) promotes the trans->cis photoisomerization. - Keywors: Stilbenes; trans-cis Photoisomerization; Influence of Substituents
